@article {acp-16-13477-2016, title = {Observing atmospheric formaldehyde (HCHO) from space: validation and intercomparison of six retrievals from four satellites (OMI, GOME2A, GOME2B, OMPS) with SEAC$^{4}$RS aircraft observations over the southeast US}, journal = {Atmospheric Chemistry and Physics}, volume = {16}, number = {21}, year = {2016}, pages = {13477{\textendash}13490}, doi = {10.5194/acp-16-13477-2016}, url = {http://www.atmos-chem-phys.net/16/13477/2016/}, author = {L. Zhu and D.J. Jacob and Kim, P. S. and J. A. Fisher and K. Yu and Travis, K. R. and L.J. Mickley and Yantosca, R. M. and M.P. Sulprizio and De Smedt, I. and Gonz{\'a}lez Abad, G. and Chance, K. and Li, C. and Ferrare, R. and Fried, A. and Hair, J. W. and Hanisco, T. F. and Richter, D. and Jo Scarino, A. and Walega, J. and Weibring, P. and Wolfe, G. M.} }